CN210821818U

CN210821818U - Efficient refuels limit valve

Info

Publication number: CN210821818U
Application number: CN201921269449.2U
Authority: CN
Inventors: 孙国庆; 卢换校; 孙金东
Original assignee: Ningbo Rocket Automobile Parts Co ltd
Current assignee: Ningbo Rocket Automobile Parts Co ltd
Priority date: 2019-08-07
Filing date: 2019-08-07
Publication date: 2020-06-23
Anticipated expiration: 2029-08-07

Abstract

The utility model relates to an efficient refuels limit valve, include: o shape circle, upper cover, casing, float subassembly, spring and bottom, the relation of connection is: the O-shaped ring is sleeved and connected with the upper cover, the upper cover is connected with the shell, the floater component is placed and connected with the upper cover, the bottom end of the upper cover is connected with the bottom cover in a clamping mode, two ends of the spring are respectively connected with the floater component and the bottom cover, the floater component comprises a sealing sheet, a sealing sheet support and a floater, and the sealing sheet, the sealing sheet support and the floater are connected in sequence. The utility model discloses can effectual suppression fuel leak, improve the environmental protection requirement, reduce the cost of labor, increase the performance of enterprises.

Description

Efficient refuels limit valve

Technical Field

The utility model relates to an annex of car oil tank especially relates to an efficient that the inside atmospheric pressure of oil tank keeps at a definite value refuels limit valve.

Background

The oiling limiting valve is applied to an automobile fuel supply system, a flange plate arranged on an oil tank in the automobile fuel supply system is used for accurately controlling the oiling amount in the oiling process, and the oiling amount is guaranteed within a safety factor. During normal running, the internal air pressure of the oil tank is kept at a certain value. And under the high-temperature state, when the internal pressure of the oil tank is too high, oil vapor is discharged into the carbon tank for storage. When the internal pressure of the oil tank is too low in the high-speed running state of the automobile, air is supplemented, so that the oil tank does not shrink; in addition, when the automobile turns over in an accident, the float of the oiling limit valve closes the channel to prevent fuel oil in the oil tank from leaking.

The prior art refuels limit valve can have following defect in the in-service use:

1. controlling the oiling height, namely controlling the non-closing height by utilizing the mounting height of a valve on a flange plate, and having complex detection and poor interchange;

2. the floater supports: a hard surface is arranged between the floater and the bottom surface support, the floater falls and collides, and the noise generated by the collision is sharp;

3. float seal/open: under the action of buoyancy and a spring, the floater rises, the membrane seals the channel, after the buoyancy is reduced, the floater falls by the dead weight, the side surface of the membrane is torn open and is completely opened, and in the normal running process, the floater moves up and down to carry a large amount of fuel to inject the fuel into the channel;

4. and the sealing sheet is installed, namely is hung between the floater and the shell, and is inclined at an angle, so that the installation is inconvenient.

Thus, the prior art refueling limit valve also has a place to lift.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an efficient refuels limit valve to solve the technical problem that refuels limit valve exists of current car.

In order to achieve the above object, the utility model provides an efficient refuels limit valve, include: o shape circle, upper cover, casing, float subassembly, spring and bottom, the relation of connection is: the O-shaped ring is sleeved and connected with the upper cover, the upper cover is connected with the shell, the floater assembly is placed and connected with the upper cover, the bottom end of the upper cover is connected with the bottom cover in a clamping mode, two ends of the spring are respectively connected with the floater assembly and the bottom cover, the floater assembly comprises a sealing sheet, a sealing sheet support and a floater, the sealing sheet support and the floater are sequentially connected, the sealing sheet is a circular sheet body with a sealing through hole in the middle, and the sealing sheet further comprises an axially protruding hollow cylinder clamping portion; the sealing piece support is a circular piece body with a clamping through hole in the middle, the cylindrical clamping part of the sealing piece is inserted into the clamping through hole of the sealing piece support, and the cylindrical clamping part of the sealing piece is clamped with the end face of the clamping through hole of the sealing piece support; the sealing piece bracket also comprises at least two bracket buckles, and the bracket buckles are axially connected with the outer edge of the sealing piece bracket; the top of the floater comprises an annular clamping groove, and the support buckle of the sealing sheet support is connected with the annular clamping groove in a clamping mode.

According to the oil filling limit valve of the preferred embodiment of the utility model, the upper cover comprises an insertion cylinder part, a cover plate part and a cover cylinder part which are sequentially connected, wherein the insertion cylinder part is a hollow cylinder body, the insertion cylinder part is provided with an annular groove, and the O-shaped ring is sleeved and connected with the annular groove; the cover piece part is a circular piece body with a central through hole, at least two notches are formed in the outer edge of the cover piece part, the central through hole of the cover piece part is connected with the barrel body of the inserting barrel part, a distance exists between the connecting position and the end face of the inserting barrel part, and the end face, facing one end of the floater, of the inserting barrel part is an inclined plane; the cover barrel body is a hollow barrel body, and at least two cover clamping inclined convex ribs are arranged on the outer surface of the barrel body of the cover barrel body.

According to the oil filling limit valve of the preferred embodiment of the utility model, the shell is a hollow cylinder, and the shell clamping inclined convex rib is arranged on the inner surface of the shell corresponding to the position of the cover clamping inclined convex rib; the outer surface of the shell is provided with at least two shell buckles.

According to the utility model discloses preferred embodiment refuel limit valve, the spring recess is seted up to the bottom of float, the spring recess is seted up on the upper portion of bottom, the both ends of spring are connected respectively the spring recess of float with the spring recess of bottom.

According to the utility model discloses preferred embodiment refuel limit valve, float buffering foot is seted up on the upper portion of bottom.

The utility model discloses refuel the limit valve to current and improve, most main purpose is exactly for making refuel the limit valve and have the practicality more. The specific objectives are as follows:

1. designing a practical oiling limit valve: the oiling height control is integrated on the valve, so that the valve can be independently detected, and the interchangeability of the valve on a flange plate is improved;

2. designing a practical oiling limit valve: a buffering foot structure is added between the floater and the bottom support, so that the falling noise of the floater is reduced;

3. designing a practical oiling limit valve: in the normal running process, the floater moves up and down, and the oil injection to the channel by carrying a large amount of fuel can be inhibited by reducing the large-caliber channel into a small caliber;

4. designing a practical oiling limit valve: the sealing sheet is pressed into the bracket separately and is buckled on the floater, so that the installation is simple and convenient.

Therefore, compared with the prior art, the utility model has the advantages of it is following:

firstly, the switching can be carried out at will according to different height requirements;

the noise generated by the valve can be obviously reduced during the running of the vehicle, and the seating performance in the vehicle is improved;

thirdly, the fuel leakage can be effectively inhibited, and the environmental protection requirement is improved;

fourth, this application reduces the cost of labor, increases the performance of enterprises.

Of course, it is not necessary to implement any particular embodiment of the present invention to achieve all of the above technical effects at the same time.

Drawings

FIG. 1 is a schematic view of the present application of a refueling check valve;

FIG. 2 is a schematic sectional view of the structure of the refueling limiting valve of the present application;

FIG. 3 is a exploded view of the refueling stop valve configuration of the present application;

FIG. 4 is a schematic view of the float assembly of the present application;

FIG. 5 is an exploded view of the float of the present application;

FIG. 6 is a schematic view of the present application with the upper cover inserted into the housing;

FIG. 7 is a schematic view of the structure of the upper cover and the housing of the present application;

FIG. 8 is a top view of the cover and housing of the present application shown rotated and snapped in;

FIG. 9 is a schematic view of the upper lid notch of FIG. 8;

FIG. 10 is an enlarged schematic view of the upper portion of FIG. 2;

FIG. 11 is a schematic view of the operating principle of the refueling check valve of the present application;

FIG. 12 is a schematic view of the float cushioning foot of the bottom cap of the present application;

FIG. 13 is a schematic view of the float cushioning foot and float connection of the bottom cap of the present application;

FIG. 14 is a schematic view of the bottom cover inserted into the housing of the present application;

FIG. 15 is a perspective schematic view of a fill stop valve connection according to the present application.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings.

Referring to fig. 1, 2 and 3, the present application fuel filling limit valve has a shape, a structural section and a burst-open schematic view, and as shown in the drawings, the present application fuel filling limit valve includes: o-shaped ring 1, upper cover 2, casing 3, float subassembly, spring 7 and bottom 8, the relation of connection is: the O-shaped ring 1 is sleeved with the upper cover 2, the upper cover 2 is connected with the shell 3, the floater assembly is placed in the upper cover 2 and connected with the lower cover 8, the bottom end of the upper cover 2 is clamped and connected with the lower cover 8, and two ends of the spring 7 are respectively connected with the floater assembly and the lower cover 8. The spring 7 has the functions of: the float assembly is lifted by buoyancy and elastic force assistance, and the height of the closed channel can be changed by finely adjusting the elastic force of the spring.

Referring to fig. 4 and 5, the present application is schematically illustrated in a float assembly, wherein the float assembly includes a sealing sheet 4, a sealing sheet support 5 and a float 6, the sealing sheet 4, the sealing sheet support 5 and the float 6 are sequentially connected, referring to fig. 2 and 3, the sealing sheet 4 is a circular sheet body with a sealing through hole in the middle, and the sealing sheet 4 further includes an axially protruding hollow cylinder engaging portion 41; the sealing piece holder 5 is a circular piece with a clamping through hole 51 in the middle, as shown in fig. 2, the cylindrical clamping portion 41 of the sealing piece 4 is inserted into the clamping through hole 51 of the sealing piece holder 5, and the cylindrical clamping portion 41 of the sealing piece 4 is clamped with the end surface of the clamping through hole 51 of the sealing piece holder 5; the sealing piece holder 5 further includes at least two holder buckles 52, as shown in fig. 5, the number of the holder buckles 52 in this embodiment is 4, but it should not be used to limit the present application, and more or less, as long as the clamp can be firmly clamped, should be the protection scope of the present application; the bracket buckle 52 is axially connected with the outer edge of the sealing piece bracket 5; the top of the float 6 comprises a ring-shaped slot 61, and the support buckle 52 of the sealing sheet support 5 is connected with the ring-shaped slot 61 in a snap-fit manner.

Referring to fig. 6, the upper cover 2 includes an insertion cylinder 21, a cover plate 22 and a cover cylinder 23, the insertion cylinder 21, the cover plate 22 and the cover cylinder 23 are connected in sequence, wherein the insertion cylinder 21 is a hollow cylinder, the insertion cylinder 21 is provided with an annular groove, and the O-ring 1 is sleeved and connected with the annular groove; the oil filling limiting valve is arranged on the flange plate, and the O-shaped ring 1 is in interference fit with the mounting hole diameter of the flange plate, so that a sealing effect is achieved; next, referring to fig. 7, 8 and 9, the cover plate 22 is a circular plate with a central through hole, the outer edge of the cover plate 22 is provided with at least two notches 221, the notches 221 are air exhaust holes, so as to prevent the inner cavity from generating negative pressure when the channel is closed, as shown in fig. 8, the number of the notches 221 in this embodiment is 4, but it cannot be used to limit the present application, more or less, and the protection scope of the present application should be determined as long as air can be exhausted smoothly and timely; the central through hole of the cover piece part 22 is connected with the cylinder of the insertion cylinder part 21, as shown in a part A in fig. 10, the connection part is distant from the end surface of the insertion cylinder part 21, and the end surface of the insertion cylinder part 21 facing one end of the floater 6 is an inclined surface 211; referring to fig. 11, the operating schematic diagram of the refueling limiting valve of the present application is shown in the left side of the drawing, before refueling, there is a distance between the sealing plate 4 and the inclined plane 211 of the insertion tube portion 21, as shown in the right side of the drawing, after refueling and gun jump, the fuel lifts the float assembly, the sealing plate 4 abuts against the inclined plane 211, and airflow and fuel flow are blocked, and the inclined plane can be better attached to make the sealing effect better.

Next, a structure for rotationally fastening the upper cover 2 and the housing 3 is described, as shown in fig. 7 and 8, for clarity of viewing, the upper cover 2 is inverted in fig. 7 and most of the cover cylinder 23 is cut, the cover cylinder 23 is a hollow cylinder, the cylinder outer surface of the cover cylinder 23 is provided with at least two cover-fastening oblique ribs 231, as shown in the figure, the number of the cover-fastening oblique ribs 231 in this embodiment is 4, but it cannot be used to limit the present application, and more or less, as long as the cover can be fastened smoothly, should be the protection scope of the present application; in addition, the housing 3 is a hollow cylinder, the housing engaging oblique ribs 31 are provided on the inner surface of the housing 3 at positions corresponding to the cover engaging oblique ribs 231, as shown in the figure, the number of the cover engaging oblique ribs 231 is matched, the number of the housing engaging oblique ribs 31 in this embodiment is 4, during assembly, the cover engaging oblique ribs 231 and the housing engaging oblique ribs 31 are inserted in a staggered manner, and after being in place, the housing engaging oblique ribs 231 and the housing engaging oblique ribs 31 can be rotated and attached to each other by rotating counterclockwise, so as to achieve the purpose of fastening and connecting; in addition, please refer to fig. 1, at least two shell fasteners 32 are disposed on the outer surface of the housing 3, and the shell fasteners 32 of the present application are connected and matched with the fasteners on the flange plate, so that the oil filling limit valve is lapped on the flange plate and cannot fall off, and the noise generated by the oil filling limit valve of the present application can be reduced.

Next, referring to fig. 2, a schematic cross-sectional view of the structure of the oil filling limit valve of the present application is shown, wherein a spring groove is formed at the bottom of the float 6, a spring groove is formed at the upper portion of the bottom cover 8, and two ends of the spring 7 are respectively connected to the spring groove of the float 6 and the spring groove of the bottom cover 8.

Referring to fig. 12 and 13, a float buffering leg 81 is provided at the upper portion of the bottom cover 8, and as shown in the figure, when the float 6 touches the bottom cover 8, the bottom of the float 6 touches the float buffering leg 81 of the bottom cover 8, so that the noise generated by the refueling limiting valve of the present application can be reduced. As shown in fig. 12, the bottom cover 8 further includes two locking pieces 82 and two locking posts 83, referring to fig. 6, the cover barrel 23 is provided with locking protrusions 232 and locking slots 233 corresponding to the locking pieces 82 and the locking posts 83.

Referring to fig. 14 and 15, after the upper cover 2 and the housing 3 are fastened and fixed in a rotating manner, the lower cover 8 is inserted into the housing 3, the outer edge of the lower cover 8 is stepped, so that the outer surface of the lower cover 8 is clamped on the end surface of the housing 3, the clamping piece 82 is clamped with the clamping protrusion 232, the clamping column 83 is clamped with the clamping groove 233, and the lower cover 8, the upper cover 2 and the housing 3 are tightly connected together. In addition, the oil filling limiting device can be switched at will according to different oil filling limiting height requirements, as shown in fig. 1, the shell 3 is provided with a limiting through hole 33, and switching is performed by adjusting the height of the limiting through hole 33.

The above disclosure is only for the specific embodiments of the present invention, but the present invention is not limited thereto, and any changes that can be made by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. An efficient refuels limit valve, its characterized in that includes: o shape circle, upper cover, casing, float subassembly, spring and bottom, the relation of connection is: the O-shaped ring is sleeved and connected with the upper cover, the upper cover is connected with the shell, the floater component is placed and connected with the upper cover, the bottom end of the upper cover is connected with the bottom cover in a clamping manner, two ends of the spring are respectively connected with the floater component and the bottom cover, the floater component comprises a sealing sheet, a sealing sheet support and a floater, and the sealing sheet, the sealing sheet support and the floater are sequentially connected;

the sealing sheet is a circular sheet body with a sealing through hole in the middle, and the sealing sheet also comprises a hollow cylindrical clamping part protruding axially;

the sealing piece support is a circular piece body with a clamping through hole in the middle, the cylindrical clamping part of the sealing piece is inserted into the clamping through hole of the sealing piece support, and the cylindrical clamping part of the sealing piece is clamped with the end face of the clamping through hole of the sealing piece support; the sealing piece bracket also comprises at least two bracket buckles, and the bracket buckles are axially connected with the outer edge of the sealing piece bracket;

the top of the floater comprises an annular clamping groove, and the support buckle of the sealing sheet support is connected with the annular clamping groove in a clamping mode.

2. The refueling limit valve as recited in claim 1 wherein the upper cover includes a spigot portion, a cover tab portion and a cover barrel portion, the spigot portion, the cover tab portion and the cover barrel portion being connected in series, wherein,

the inserting cylinder part is a hollow cylinder body, an annular groove is formed in the inserting cylinder part, and the O-shaped ring is sleeved and connected with the annular groove;

the cover piece part is a circular piece body with a central through hole, at least two notches are formed in the outer edge of the cover piece part, the central through hole of the cover piece part is connected with the barrel body of the inserting barrel part, a distance exists between the connecting position and the end face of the inserting barrel part, and the end face, facing one end of the floater, of the inserting barrel part is an inclined plane;

the cover barrel body is a hollow barrel body, and at least two cover clamping inclined convex ribs are arranged on the outer surface of the barrel body of the cover barrel body.

3. The refueling limit valve as recited in claim 2 wherein the housing is a hollow cylinder, and the housing engaging inclined ribs are provided on the inner surface of the housing at positions corresponding to the cap engaging inclined ribs; the outer surface of the shell is provided with at least two shell buckles.

4. The refueling limit valve as recited in claim 1 wherein a spring recess is formed in a bottom portion of the float and a spring recess is formed in an upper portion of the bottom cap, and wherein both ends of the spring are connected to the spring recess of the float and the spring recess of the bottom cap, respectively.

5. The refueling limit valve as recited in claim 1 wherein the upper portion of the bottom cap defines a float cushioning foot.